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Writing a dict to txt file and reading it back?

...al() will evaluate any string, and if someone tricked you into running a really tricky string, something bad might happen. In this case, you are just running eval() on your own file, so it should be okay. But because eval() is useful, someone made an alternative to it that is safer. This is calle...
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Create a hexadecimal colour based on a string with JavaScript

I want to create a function that will accept any old string (will usually be a single word) and from that somehow generate a hexadecimal value between #000000 and #FFFFFF , so I can use it as a colour for a HTML element. ...
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How can I convert an image into a Base64 string?

... StaxManStaxMan 98.6k2828 gold badges184184 silver badges223223 bronze badges ...
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How to sleep for five seconds in a batch file/cmd [duplicate]

... ping is a system utility that sends ping requests. ping is available on all versions of Windows. 127.0.0.1 is the IP address of localhost. This IP address is guaranteed to always resolve, be reachable, and immediately respond to pings. -n 6 specifies that there are to be 6 pings. There is a 1s de...
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Retrieve the commit log for a specific line in a file?

... -S'the line from your file' -- path/to/your/file.txt This will give you all of the commits that affected that text in that file. If the file was renamed at some point, you can add --follow-parent. If you would like to inspect the commits at each of these edits, you can pipe that result to git sh...
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Pure virtual destructor in C++

...ing from A and then try to delete or destroy it, A's destructor will eventually be called. Since it is pure and doesn't have an implementation, undefined behavior will ensue. On one popular platform, that will invoke the purecall handler and crash. Edit: fixing the declaration to be more conformant...
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Polymorphism vs Overriding vs Overloading

...xample when teaching a class. The canonical "Bank Account" class didn't really express the "abstractness" of the base class. The other canonical example (Animal, make noise) was too abstract for understanding. I was looking for a single base with too obvious subclasses. Actually, goPee() was the...
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Using column alias in WHERE clause of MySQL query produces an error

... JoniJoni 98.4k1111 gold badges118118 silver badges173173 bronze badges ...
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How can I generate a self-signed certificate with SubjectAltName using OpenSSL? [closed]

... ... d6:7d:ed:67:44:c3:65:38:5d:6c:94:e5:98:ab:8c: 72:1c:45:92:2c:88:a9:be:0b:f9 Exponent: 65537 (0x10001) X509v3 extensions: X509v3 Subject Key Identifier: 34:66:39:7C:EC:8B:70:80:9E:6F:95:89:D...
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What algorithms compute directions from point A to point B on a map?

...oughly half the work (2*pi*(r/2)^2 vs pi*r^2). To avoid exploring the back-alleys of every city between your source and destination, you can have several layers of map data: A 'highways' layer that contains only highways, a 'secondary' layer that contains only secondary streets, and so forth. Then, ...